ABAP Select data from SAP table ESTOCC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ESTOCC table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to ESTOCC. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the ESTOCC table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_ESTOCC TYPE STANDARD TABLE OF ESTOCC,
      WA_ESTOCC TYPE ESTOCC,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <ESTOCC> TYPE ESTOCC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ESTOCC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ESTOCC
  INTO TABLE IT_ESTOCC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESTOCC
*  INTO TABLE @DATA(IT_ESTOCC2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_ESTOCC INDEX 1 INTO DATA(WA_ESTOCC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ESTOCC ASSIGNING <ESTOCC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESTOCC>-MANDT = 1.
<ESTOCC>-RECN = 1.
<ESTOCC>-ACTN = 1.
<ESTOCC>-PROVID = 1.
<ESTOCC>-PROVSUBID = 1.

ENDLOOP.

LOOP AT IT_ESTOCC INTO WA_ESTOCC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESTOCC-PROVINSTID, sy-vline,
  WA_ESTOCC-IDTYPE, sy-vline,
  WA_ESTOCC-IDCAT, sy-vline,
  WA_ESTOCC-LANGU, sy-vline,
  WA_ESTOCC-ESTCAT, sy-vline,
  WA_ESTOCC-PROVTIMESTAMP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESTOCC you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_ESTOCC TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_ESTOCC INTO WA_ESTOCC.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit ALPHA, internal->external for field RECN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESTOCC-RECN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTOCC-RECN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ACTN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESTOCC-ACTN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTOCC-ACTN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ESTOCC-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTOCC-LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SPEC1, internal->external for field SUBID
CALL FUNCTION 'CONVERSION_EXIT_SPEC1_OUTPUT'
  EXPORTING
    input =                      WA_ESTOCC-SUBID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTOCC-SUBID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECNOBJ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESTOCC-RECNOBJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESTOCC-RECNOBJ.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_ESTOCC_STR, 
MANDT TYPE STRING,
RECN TYPE STRING,
ACTN TYPE STRING,
PROVID TYPE STRING,
PROVSUBID TYPE STRING,
PROVINSTID TYPE STRING,
IDTYPE TYPE STRING,
IDCAT TYPE STRING,
LANGU TYPE STRING,
ESTCAT TYPE STRING,
PROVTIMESTAMP TYPE STRING,
LOCALTIMESTAMP TYPE STRING,
RELEVANTFLG TYPE STRING,
ACTIVEFLG TYPE STRING,
LOADFLG TYPE STRING,
DELETEFLG TYPE STRING,
SUBID TYPE STRING,
RECNOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESTOCC_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_ESTOCC_STR-MANDT sy-vline 
WA_ESTOCC_STR-RECN sy-vline 
WA_ESTOCC_STR-ACTN sy-vline 
WA_ESTOCC_STR-PROVID sy-vline 
WA_ESTOCC_STR-PROVSUBID sy-vline 
WA_ESTOCC_STR-PROVINSTID sy-vline 
WA_ESTOCC_STR-IDTYPE sy-vline 
WA_ESTOCC_STR-IDCAT sy-vline 
WA_ESTOCC_STR-LANGU sy-vline 
WA_ESTOCC_STR-ESTCAT sy-vline 
WA_ESTOCC_STR-PROVTIMESTAMP sy-vline 
WA_ESTOCC_STR-LOCALTIMESTAMP sy-vline 
WA_ESTOCC_STR-RELEVANTFLG sy-vline 
WA_ESTOCC_STR-ACTIVEFLG sy-vline 
WA_ESTOCC_STR-LOADFLG sy-vline 
WA_ESTOCC_STR-DELETEFLG sy-vline 
WA_ESTOCC_STR-SUBID sy-vline 
WA_ESTOCC_STR-RECNOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.